5. If the letter Z is used, specify in Item 18 the other equipment carried, preceded by COM/, DAT/, and/or NAV/, asappropriate.6. Information on navigation capability is provided to ATC for clearance and routing purposes.7. Guidance on the application of performance−based communication, which prescribes RCP to an air traffic service ina specific area, is contained in the Performance−Based Communication and Surveillance (PBCS) Manual (Doc 9869).

Enhanced surveillance capability is the ability of the aircraft to down-link aircraft derived data via a Mode S transponder.Followed by one or more of the following codes if the aircraft has ADS-B capability:B1 ADS-B with dedicated 1090 MHz ADS-B “out” capabilityB2 ADS-B with dedicated 1090 MHz ADS-B “out” and “in” capabilityU1 ADS-B “out” capability using UATU2 ADS-B “out” and “in” capability using UATV1 ADS-B “out” capability using VDL Mode 4V2 ADS-B “out” and “in” capability using VDL Mode 4NOTE−

File no more than one code for each type of capability; for example, file B1 or B2,but not both.Followed by one or more of the following codes if the aircraft has ADS-C capability:D1 ADS-C with FANS 1/A capabilitiesG1 ADS-C with ATN capabilities